Smithson at the site of Spiral Jetty (1970), Great Salt Lake, Utah, April 1970. Photographed by Gianfranco Gorgoni.

Robert Smithson is perhaps best known as a pioneer of the Earthworks movement and the creator of the iconic Spiral Jetty (1970). However, his involvement in the development of Earthworks is only one of his many contributions to postwar American art. One of the most important concepts Smithson was that of the “site,” a place in the world where art is inseparable from its context. His sites included remote locations like Rozel Point, on the north shore of the Great Salt Lake; the Yucatan Peninsula in Mexico; the art museum and the white cube of the gallery; and the pages of art magazines like Artforum, where he published some of his essays. By encompassing both conventional exhibition venues and far-flung locations within his practice, Smithson performed a kind of institutional critique, pointing to the geographical and cultural limitations that the purportedly neutral spaces of museums impose on art.